Diels‐Alder polymers. III. Polymers containing phenylated phenylene units
- 1 November 1967
- journal article
- research article
- Published by Wiley in Journal of Polymer Science Part A-1: Polymer Chemistry
- Vol. 5 (11) , 2721-2729
- https://doi.org/10.1002/pol.1967.150051101
Abstract
The Diels‐Alder reaction of biscyclopentadieneones with diacetylenes produces colorless, soluble, phenylated polyphenylenes of high molecular weight (M̄n ≃ 40,000) in nearly quantitative conversions. The polymers are noncrystalline, form clear films, and are stable in air to 550°C. Under nitrogen, the polymers lost approximately half the phenyl groups attached to the phenylene main chain to give brown‐black insoluble polyphenylenes of very low crystallinity.Keywords
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